const { preBind, postBind } = require('../../lib/utils/relate');
const { LOG_TYPE } = require('../../common/constants');
const { decryptWeixinData, getWeixinCache, getWeixinAccessToken } = require('../../lib/utils/weixin');
const { initWeixin } = require('../../lib/third-party');
const { ERROR } = require('../../common/error');

/**
 * 通过微信绑定手机号
 * @tutorial https://uniapp.dcloud.net.cn/uniCloud/uni-id-pages.html#bind-mobile-by-mp-weixin
 * @param {Object} params
 * @param {String} params.encryptedData   微信获取手机号返回的加密信息
 * @param {String} params.iv              微信获取手机号返回的初始向量
 * @param {String} params.code            微信获取手机号返回的code
 * @returns
 */
module.exports = async function (params = {}) {
    /**
     * 微信小程序的规则是客户端应先使用checkSession接口检测上次获取的sessionKey是否仍有效
     * 如果有效则直接使用上次存储的sessionKey即可
     * 如果无效应重新调用login接口再次刷新sessionKey
     * 因此此接口不应直接使用客户端login获取的code，只能使用缓存的sessionKey
     */
    const schema = {
        encryptedData: {
            required: false,
            type: 'string',
        },
        iv: {
            required: false,
            type: 'string',
        },
        code: {
            required: false,
            type: 'string',
        },
    };
    const { encryptedData, iv, code } = params;
    this.middleware.validate(params, schema);

    if (!encryptedData && !iv && !code) {
        return {
            errCode: ERROR.INVALID_PARAM,
        };
    }

    const uid = this.authInfo.uid;

    let mobile;
    if (code) {
        // 区分客户端类型 小程序还是App
        const accessToken = await getWeixinAccessToken.call(this);
        const weixinApi = initWeixin.call(this);
        const res = await weixinApi.getPhoneNumber(accessToken, code);

        mobile = res.purePhoneNumber;
    } else {
        const sessionKey = await getWeixinCache.call(this, {
            uid,
            key: 'session_key',
        });
        if (!sessionKey) {
            throw new Error('Session key not found');
        }
        const res = decryptWeixinData.call(this, {
            encryptedData,
            sessionKey,
            iv,
        });

        mobile = res.purePhoneNumber;
    }

    const bindAccount = {
        mobile,
    };
    await preBind.call(this, {
        uid,
        bindAccount,
        logType: LOG_TYPE.BIND_MOBILE,
    });
    await postBind.call(this, {
        uid,
        bindAccount,
        extraData: {
            mobile_confirmed: 1,
        },
        logType: LOG_TYPE.BIND_MOBILE,
    });
    return {
        errCode: 0,
    };
};
